Machine for cutting out and stamping out



LQF. GROS. MACHINEJOR CUTTING OUT AND STAMPING OUT.

APPLICATION FILED APR. 2h 1919.

1358,8319 Patentefi. Sept. 28, 1920,,

3 SHEETSSHEET I- lnmu L. F. Gnos. MACHINE FOR CUTTING OUT AND STAMPING OUT.

APPLICATION FILED APR-2|, l9i9.

Patented Sept. 28; 1920.

a SHEET SSHEET 2.

awpewi'oz L. F. GROS.

MACHINE FOR- CUTTING OUT AND STAMPING OUT.

APPLICATION FILED APR. 21, I919. I v

Patented Sept. 28, 1920.

3 SHEETS-SHEET 3.

rrs ST LOUIS FERDINAND snos, or PARIS, FRANCE.

MACHINE non CUTTIN our AND straivrrme, our.

Application fi1e6. April 21, 1919. Serial in 291,589.

chine for cutting out and stamping out, in

which a simple'descent of the press plate or head cuts out and stamps outfthe blank successively to the different diameters and finishes the article to be produced, without itbeing necessary to reheat it for thesuccessive stages of stamping out, or to sub ject it to any manipulations during the course of manufacture; and in which the various punches used, are brought back totheir original position by the simple return of the head of the machine to its upper point of departure. V a

In order to make the subject of the invention clear, the present specification is accompanied by a drawing, merely by way of example, in which Fi ure 1 is a sectional elevation on line A-- v of Fig. 2,

Fig. 2 is a side elevation of Fig. 1 in projection to the right,

Fig. 3 is a plan of the machine, and

Fig. 4 is a separate view of a modified construction of the concentric arrangement of the plungers for their rising.

In the said drawing (Figs. 13), 1 is the' bottom plate in which the stamping out is completely finished; above the same are arran "ed plates through which are accomplis ed the various phases of the stamping out and of cutting away the bottom if necessary.

The machine comprises three sets of concentric punches; the plate 1 comprises a device 2 arranged opposite concentric plungers 3 and 4 intended for stamping out box covers or other similar articles; it is moreover provided with a cylindro-conical hold 5 arranged opposite concentric plungers 6 and 7 intended for the manufacture of ferrules, and, finally, it is further provided with small holes 8 in order to enable the stamped out article, the bottom of which comes into contact with it, to be provided with small holes by a plunger 9 concentric with punches Specification of Letters Patent. Patented Sept. 28, 1920.

10 and 11 and provided at the bottom witha set of small punches 12. V, I

All the plungers are provided, for the purpose'of fixing them, with a-conical head lnserted between two plates connected together, through which they pass.

1 The plungers" 4, .7? and 11 are held, by i plates 13 and 14 connected together by scre'ws 1 5; the-plungers 7 and 10 are held by plates 16 and 17 connected together-by "screws 18, and the plungers 3, 6 and 9Iare held by press head plates 19 and 20 0011 nected together by screws 21.

Springs 22. are inserted between the sets of plates. 19-20 and 16 -17 in the same way springs 23 are inserted between the plate 24 and the plate 13. V

When the punches are in their upper position, pawls 25 and 26 are respectively in i engagement with the plates 16 and 24, and are of a suitable length each, in order to,

' strike in turn with their bottom end against the inclined faces 27 ig. 2) provided on the upper end of the guide 28 in whichslide the various plungers or punches.

The plates 16 and 13 are provided with lateral'lugs in which slide rods 29, 30 with two diameters and with a head 31.

Studs 34 are arranged so asto meet during the descent of the press head 19-20 the hooks 35 and bring them into engagement with the top of the plate 23 during the whole time that the inner punches continue to descend.

It will be thus understood that if, by means of the rod 37, the "head of the machine is lowered, all the punches will be at first lowered simultaneously, but when the pawls 26 meet the inclined planes 27, the plungers 4 and 11 will be stopped, whereupon the studs 34 will bring the hooks 35 into engagementwith the top of the plate 23 which keeps the said plungers 4 and 11 in the bottom position; that afterward the pawls 25 meeting in their turn the inclined faces 27, the downward movement of the When the press head is raised by means plungers 7 and 10 will be stopped, and only the plungers enable the latter to be brought -tion. back to their starting position when the.

pressure which was exercised on them, ceases; in this case the inner plunger a carries a screw 6, the head of which engages With a longitudinal mortise 0 provided in the outer piston cl;

It must be pointed out that when the strength of the materials to be stamped out,

' is small, the small plungers 12 could be connected direct to thepress head constituted by the two plates 19 and 20. r

It is obvious that the'machine could be built with any desired number of punches or plungers and a corresponding number of plates; that the said punches or plungers could be of any desired shape in cross section; that not only any desired metal could be cut out and stamped out with the machine, but that any other materials, such as "for instance cardboard, could also be treated with the same.

WhatI claim as my invention and desire to secure by Letters Patent is 1. In a machine of the class described, a plurality of punches, guiding means tor'the punches, common operating means for the punches, springs to impart reverse movement to the punches, means to limit the ex tent of the reverse movement of the punches, means to lock one of the punches at the end of its punching stroke, a spring to normally hold said locking means in unlocking position, and means movable with another punch to move said locking means to locking posi- 2. In a machine of the class described, a plurality of punches, guiding means for the punches, common operating means for the punches, attached to one of them, a connecting element carried by one of the punches and arranged to engage another and cause both to move simultaneously during a portion of a punching stroke, and means to cause said connecting element to then di.s connect said punches from each other and cause said punches to successively complete their punching strokes.

3. In a machine of the class described, plurality of punches, guiding means for the punches, said guiding meanshaving a cam, common operating means for the punches, attached to one of them, and a connecting pawl carried by one of the punches and arranged to engage another and cause both to move simultaneously during a portion of a punching stroke, said pawl being also arranged to engage said cam and to be thereby disengaged from the second named punch, and hence cause the punches to successively complete their punching strokes.

In testimony whereof I affix my signature.

LOUIS'FERDINAND cnos. 

